BBC Test the nation - free IQ test

BBC Test The Nation - interactive culturally biased IQ test for UK citizens
over the age of 16. Culturally biased means than only UK citizens would get a
rather good result, because many questions require specific knowledge possessed
by people living in UK. There is a time limit for
instructions, item exposure and answering the items / questions.

IQ test results
depend on your vigilance, so don't take the tests until you are ready.
If you are tired, highly anxious or distracted by other
things you will inevitably perform less well. On the other hand,
if you take the same test over and over the results will be overestimated
because of the learning process. If you
want to know your accurate IQ you should take various IQ tests with long time
intervals in between. IQ score will probably be different because different
tests measure different aspects of intelligence (1st level: verbal vs.
nonverbal). Nevertheless, all of these
reviewed tests also measure the general factor of intelligence.

Only psychologists can give You a real test of intelligence, but online tests
are very similar, so have fun, nothing more.